Endtjctance coil fob radiocommunication



' Nov. 18, 1924.

L. E. WACKERLE (IMM/WW Nov. 18, 1924.

L. E. WACKERLE INDUCTANCE COIL FOR RADICOMMUNICATION Filed April 2, 19232 Sheets-5heet 2 z Jmuemffo/L Lewis EB/Ezclerle Str-www Patented Nov.18, 1924.

UNITED; ST-ATES LEWIS E. WACKEBLE, OF JACKSONVILLE` ILLINOIS.

NDUCTANCE COIL FOR RADIOCOBIMUNICATION.

Application finea April 2, 1923. serial No. 629,521.

To all whom it m1/ concem;

Be it 'known that I Lewis E. VVAcKnnLE, a` citizen 'of thelUn'itedStates, residing at. Jacksonville, in the county of Morgan and State4 oflllinois,I have invented new and usefil' Improveinent's in InductanceCoils for. Radiocommunication, of which the following' is aspecification.

invention relates to' the, art of transmiftingbelectrical ""pulses'Without the use ofi'wiresfbetween t e. stations, the art beingcomtrinlyi ""Iqwnlaszradio communication.

Moriiparticularly the invention relates to aninductance. coil fo1;nse in`connection with r'atliofsi''nuQ in'gandother like arts, the coilsbeing-a apt fforfservifc'e either alone or ln combination 'fi'ithlik'ecoills in the construction.- of"V indiietances', 'variometersvariocouplersi andot'hex: 'similar' devices.

One'ofthe chlieffobjetins to many of the existin'gffrms of coilfwhereinthe coil is at all offla compact arrangement is that the varnishior:ot-alier mediiln used to retain the wires' in their position. acts as adielectric, andin consequeno`e.-'tlie coil not only acts as aninductanc'e, but asf'aninherent capacity 8,0 thaLittaQtsina nieasnre' asacondenser. T'hisjs veinflohjectlonhhle many. cases, and one.important'.i obJectS of the present invention is topnovi e en' improvedConstruction of coil which is'so wound that the use of a dielectric-tohold the Windings in position will' be rendered unnecessary. To the sameend, another important object of the invention is to providean improvedconstruction of coil wherein the successive Windings of the coil will benearly free from all parallelism between successive Windings.

A third important object of the invention is the provision of animproved Construction of` coil so arranged that the coil is wound. in. adish shape, one. side of. which is coneave-,. thereby producing. whatmay be tormed. a. field-i fous.

Alfounth. important of the inventionis toprovide an.impi:oved'.forni ofcoil wound. in dish. shape. whereina series of successivewindihgs aresoarranged that no two. of.v the. Windings have; parallel' paths.

With the;ahove.and other objects in view as will be, alljparent` theinvention Aconsistsin.general ofcertain noveldeof construction: andcombinations of parts described illustrated accompangving. drawings. andspecificellx- In the accompanying drawings likc characters of referenceindicate like parts in the several views. and: I

Fig. 1 is a side elevation of the coil con.- structed in accordance withthis invention.

Fig. 2 is a transverse section taken diametrically through such a coil.

Fig. 3 isa schematic view of the first. Winding.

Fig. 4' is a schematic view of the second Winding.

Fig. 5 is a schematic view of the third Winding.

Fig. 6-is a schematic view ofithe fotirt-h Winding. i

Fig. 7 is a schematic view of the fifth Winding. 1 i

Fig. 8 is aschem'atic view ofr the sixth Winding.

Fig. 9 is an enlarged detailed view showing certain of the radiatingarmsand the first and second convoltions ofl the wir-ing.

Fig. 10 is a view similar to Fig. 9, lslic'w'- ing the third, fourth andfifth convolutions of the wiring. i

Fig. 11 is a general wiring diagram showing six complete convolutions intheir relation to each other. -i

Fig 12 is a. detail view of one of the radiating arms.

Fig. 13 is a detail cross sectional view of a modifie'd form of theinternal disk. showing one side thereof concave and the other sideconvex. Y.

In the Construction of this coil there is provided an internal disk orhublO'having peripheral slots 11 formed therein which receive thesmaller and inner ends of spokes 12 which are formed from fiat strips ofinaterial tapered from end to end, and set radially into the hub. Thesestrips. are set so that their fiat sides are substantially parallel withthe axis of the huh7 and thiisppr'esent their edges laterallywithrespect to the. hub. Preferahly these strips'. inclined only on oneside or' are dished so as. to present aconcave arrangementfif the edgesof the. strip at one. sideof the'hnh, and either fiat. or generallyconvex. arrangement on tlieother side offtheihl'lb. v r- In the.Windings, of thefc' il a ,wire, 13f is taken and. secured to one ofthese Stripf, or, as they may be ca1led,; spokes, atj-the point. of itsjunction with the disk rflhub. The. wireis then led around the huhbeinslfiid at One. edge af 01119 Shake end the llO opposite Ledge of thevnext succeeding spoke throughout soV that the 'first convolution, thusformed, is Woven back and forth from one side of the disk to 'the otherat' single spoke intervals. It is preferred that the number of spokesbeing uneven, and with an uneven number ofspokes, the second convolutionis carried on'around the spokes in the same manner as the firstconvolution, but owing to the fact that thevnumber of spokes is uneven,the second convolution of the wire Will cross the first convolution ofthe wire between-each pair of adjacent spokes. ,,Thesetwo steps in theWinding are clearly illustrated in Figures 3 and 4,. The thirdconvolution of th'efiseries -is formed by'weaving the wire back and'forth in such a ,mannerA as to -leave two spokes on-Jone 'side of thewire and the next two spokeson thelfother side thereof. rIn other words,in the first two convolutions, the wire lies on Vopposite sides of;successive spokes lwhile in the third convolution'i'the wires lie onoppositewsides of pairs, of successive spokes. The fourth convolutionVis formed li'keflthe thirdhoony'olution, but owing to the-fact that thespokes are uneven in number, this fourthwconvolution iwill -bestaggel'ed one spoke around the' coil,

The'pfifth convolution is forme d'like the third andffourth, but -isstaggered onex more Vs`pokef'around thefcoilV so that the wires ofthefifth convolution cross thelwiresl of the third Vconvolutionrat thepo.int.where.-the respective convolutionfshifts :from one side to theother of the spokes., The sixth convolution .is similarnto theconvolution, but staggered one spoke farther around, and by reason oflthis arrangement, Ithe wires of the sixth convolution cross the .wiresof the fourth convolution where they shift from one side to the other ofthe spokes.

If more than six convolutions are made` as `commonly thecase, the'seventh convolution is wound like the first, the eighth like the second,and so on.. In other words, the series of six convolutions justdescribed arerepeated indefinitely as many times as may be necessary toform the complete coil. 'IVith thislarrangement it will be seen that notwo successive convolutions are'wound `m lthe same manner, and that meach convoluti'on the wire also contactswit-h the supvporting-Spokesatufthe thin edges of these spokes so that. even if aV ''dielectric.lsuch as Narnish, shellac, or the'y like is employed Ltoh'old these wiresin position on these edges, 'the V adj acent wiresI are only (parallelfor. such 'an extremely shortV distance as to benegligible. andconsequently there is practically 'no production of aV capacity in thewinding'of this coil.

It is to be noted that in some instances it is found desirablle to omitthe first two of the series of 'convolutions As for inintensity at apoint, which may be termed i the focusv of the coil, substantially onthe axis of the coil and at the side therieof which is concave. i

It will also be obvious to those skilled in the art that these co-ilsmay be combined in various ways for` the construction of such devices asvariometers, variocouplers and the like. i

`There has thus been provided at simplev and efficient device of thekind 'described' and for the purpose specified.

It is obvious that minor changes may be made in the form andConstruction of the invention without departing from theimaterial spiritthereof. It is not, therefore desired to confine the invention tothe`exac't form herein shown and described, but'it is dcsired to includeall such as properly come within the scope claimed.

Having thus described 'the invention, What is claimcd as new is:

l. [i coil of the class described comprising a central disk constitutinga hub, spokes radiating from the edge of said hub, and a Winding on saidspokes consistingof a wire' wovcn around said spokes in a series ofconvolutions. the` first convolution of the series having the wire wonndto lie on opposite sides of successive single spokcs,` ihc secondconvolution of the series being woven to' have thi` wire lie on oppositesides of successive spokes but being staggered onc spoke with relationto the first convolution, the third convolution beingr arranged with thewire on opposite sides of successive sets of spokes. the fourthconvolution being similar to the third convolution hut staggered onespoke with respect thereto, the fifth convolution being similar to thefourth convolution but staggered one spoke with respect` thereto`r andvthe sixth convolution being similar to the fifth convolution butstaggered one spoke with respect thereto said series of convolutionsbeing repeated in arrangement to complete the coil.'

2. A coil of the class described comprising a hub, a series of spokesradiated from said hub` and a Winding consisting of wire arranged inconvolutions supported'on said spokes, each convolution beingrwoven'backl and forth across the spokes` each successive convolutionbeing arranged in staggered relation to the next antecedent convolution,said spokes having one edge inclined With respect to a plane passingperpendicularly through the axis of the hub, said inclined edges beingarranged to form a shallow dish in one side of the coil.

3. In a coil of the class described, a hub, a series of spokes radiatingfrom the hub, there being an odd number of spokes in the series, and acoil ivound on said spokes and consisting of a Wire Woven back and forthbetween the spokes, said wire being arranged to lie on one side of apair of spokes and on the opposite side. of the next succeeding pair,each convolution being staggercd With respect to the next antecedentconvolution, said spokes having one edge inclined with respect to aplane passing perpendicularly through the axis of the hub, said inclinededges being arranged to form a shallow dish in one side of the coil.

4. In a coil of the class described, a hub. a series of spokes radiatingfrom the hub, there being` an odd number of spokes in the series, and acoil Wound on said spokes and consisting of a Wire Woven back and forthbetween the spokes, said Wire being arranged to lie on the one side of apair of spokes and on the opposite side of the next succeeding pair,each convolution being staggered one spoke around the hub vcith respectto the next antecedent convolution, said spokes having one edge inclinedWith respect to a plane passing perpendicularly through the axis of thehub, said inclined edges being arranged to form a shallow dish in oneside of the coil.

5. A coil of the class described comprising a central disk constituti'nga hub, spokes radiating from the edge of said hub, and a Winding on saidspokes consisting of a Wire Woven around said spokes in a series ofconvolutions, the first convolution of the series having the wire Woundto lie on opposite sides of successive single spokes, the secondeonvolution of the series being Woven to have the Wire lie on oppositesides of successive spokes but being staggered one spoke With relationto the first oonvolution, the third convolution being arranged With theWire on opposite sides of successive sets of spokes, the fourthconvolution being similar to the third convoluti'on but staggered onespoke With respect, thereto, the fifth convolution being similar to thefourth convolution but staggered one spoke With respect thereto, thesixth convolution being similar to the fifth convolution but staggeredone spoke With respect thereto, said series of convolutions beingrepeated in arrangement to complete the coil, said s-pokes having oneedge inclined With respect to a plane passing perpendicularly throughthe axi's of the hub, said inclined edges being arranged to form ashallo-W dish in one side of the coil.

In testimony Whereof I affix m Signature.

LEVVIS E. fAG ERLE.

